1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
//RUN: %clang_cc1 -fsyntax-only -verify %s
#include <stdarg.h>
void a(const char *a, ...) __attribute__((format(printf, 1,2))); // no-error
void b(const char *a, ...) __attribute__((format(printf, 1,1))); // expected-error {{'format' attribute parameter 3 is out of bounds}}
void c(const char *a, ...) __attribute__((format(printf, 0,2))); // expected-error {{'format' attribute parameter 2 is out of bounds}}
void d(const char *a, int c) __attribute__((format(printf, 1,2))); // expected-error {{format attribute requires variadic function}}
void e(char *str, int c, ...) __attribute__((format(printf, 2,3))); // expected-error {{format argument not a string type}}
typedef const char* xpto;
void f(xpto c, va_list list) __attribute__((format(printf, 1, 0))); // no-error
void g(xpto c) __attribute__((format(printf, 1, 0))); // no-error
void y(char *str) __attribute__((format(strftime, 1,0))); // no-error
void z(char *str, int c, ...) __attribute__((format(strftime, 1,2))); // expected-error {{strftime format attribute requires 3rd parameter to be 0}}
int (*f_ptr)(char*,...) __attribute__((format(printf, 1,2))); // no-error
int (*f2_ptr)(double,...) __attribute__((format(printf, 1, 2))); // expected-error {{format argument not a string type}}
struct _mystruct {
int (*printf)(const char *format, ...) __attribute__((__format__(printf, 1, 2))); // no-error
int (*printf2)(double format, ...) __attribute__((__format__(printf, 1, 2))); // expected-error {{format argument not a string type}}
};
typedef int (*f3_ptr)(char*,...) __attribute__((format(printf,1,0))); // no-error
// <rdar://problem/6623513>
int rdar6623513(void *, const char*, const char*, ...)
__attribute__ ((format (printf, 3, 0)));
int rdar6623513_aux(int len, const char* s) {
rdar6623513(0, "hello", "%.*s", len, s);
}
// same as format(printf(...))...
void a2(const char *a, ...) __attribute__((format(printf0, 1,2))); // no-error
void b2(const char *a, ...) __attribute__((format(printf0, 1,1))); // expected-error {{'format' attribute parameter 3 is out of bounds}}
void c2(const char *a, ...) __attribute__((format(printf0, 0,2))); // expected-error {{'format' attribute parameter 2 is out of bounds}}
void d2(const char *a, int c) __attribute__((format(printf0, 1,2))); // expected-error {{format attribute requires variadic function}}
void e2(char *str, int c, ...) __attribute__((format(printf0, 2,3))); // expected-error {{format argument not a string type}}
// FreeBSD usage
#define __printf0like(fmt,va) __attribute__((__format__(__printf0__,fmt,va)))
void null(int i, const char *a, ...) __printf0like(2,0); // no-error
void null(int i, const char *a, ...) { // expected-note{{passing argument to parameter 'a' here}}
if (a)
(void)0/* vprintf(...) would go here */;
}
void callnull(void){
null(0, 0); // no error
null(0, (char*)0); // no error
null(0, (void*)0); // no error
null(0, (int*)0); // expected-warning {{incompatible pointer types}}
}
// PR4470
int xx_vprintf(const char *, va_list);
const char *foo(const char *format) __attribute__((format_arg(1)));
void __attribute__((format(printf, 1, 0)))
foo2(const char *fmt, va_list va) {
xx_vprintf(foo(fmt), va);
}
// PR6542
extern void gcc_format (const char *, ...)
__attribute__ ((__format__(__gcc_diag__, 1, 2)));
extern void gcc_cformat (const char *, ...)
__attribute__ ((__format__(__gcc_cdiag__, 1, 2)));
extern void gcc_cxxformat (const char *, ...)
__attribute__ ((__format__(__gcc_cxxdiag__, 1, 2)));
extern void gcc_tformat (const char *, ...)
__attribute__ ((__format__(__gcc_tdiag__, 1, 2)));
|
